Excavating machine



Aug. 16, 1932.

C. H. LOTTE EXGAVATI'NG MACHINE Filedv Aug. 17. 1928 4 Sheets-Sheet l fifa/mega Aug. 16, 1932. c. H. LOTTE EXCAVATING MACHINE 4 Sheets-Sheet 2 Filed Aug. 17, 1.928

Aug. 16, 1932. c. H. LOTTE EXCAVATNG MACHINE Filed Aug. 17, 1928 4 Sheets-Sheet 5 O ,invern/Zar' r/esf Oife By fr ZZar/zeys Aug. 16, 1932. C, H, L QTTE 1,871,539

EXCAVATING MACHINE Filed Aug. 17, 1928 4 Sheets-sheet 4 NVENTOR. 62a rJ. oe

m v y @d/MMM A TTORNEY Patented Aug. 16, 1932 UNITED STATES APATEN, creme i errantes n. toren, or iJrAssiLLoN, onIoAssiGNoR To BYERS Mael-HNE coi/IPANY, F nnvnnivn, ono, .a ooiaronarroiv or MARvLAND Y Y EXCAVATING MACHINE l `applicati@meeraugust 17, 1928. Vserial Noi; 300,231.

The invention relates to powerexcavating machines. In power excavating machines itV is essential that mechanism shall be provided by which the clipper may bei crowded ini-makv ing yan insertion in the ground. In' some machines the hoisting-line or cable is used to actuate the crowding mechanism and this can be accomplished onlyV when the dipper is being hoisted. Inother machines independent crowding of the clipperV is accomplished by mechanisms including noisy gears, shafts, chains and sprockets.

One of the objects of the present invention isV to provide an excavating machine with simple and eflicient means by 'which-crowding of the dipper may be accomplished, and thereby to eliminatethe many disadvantages of previous mechanisms for the purpose. Another object is to provide a machine so into variousforms such as a drag line, Vclam shell and a shovel or dipper excavator.

` A nother object is to provide a machine in which a power reversible crowding drum is alsofor moving the dipper and clipper arm or stick in and out. A V Another Vobject is to provide amachine with means by which the crowding vcable may be automatically taken up. l VAnother object is to provide a machine with two `drums on a common shaft bythe use ofwhich the machine is adapted fora variety of purposes. l f

The. invention is illustrated'in the accompanying drawings, in which Fig. l is a'pla-n view of a machine constructed in accordance Vwith the invention; 2 is a partlydiagrammatic side elevation of the machine arranged as a clipper shovel excavator; Fig. 3 is a partly diagrammaticside elevation of a machine arranged for a. drag line; Fig. 4 is an lelevational view of`a clam-shell bucket adapted tobe used on the machine; Fig. 5 is a plan view of the operating mechanism of the machine, partly in section, illustrating the two drums mounted fon acommon axis; and Fig. 6 is a side,V elevation-of the operating mechanism. f

arranged lthat it may be readily converted utilized for two speed drag line work and' Rotation of the deelsv removedfrom the pulley 5, a pinion 7 meshing with'thege'ar 9 carried-on the end of a swing shaft 1Q, the latter swingshaft being mounted parallel to the shaft and journalled also in the frames G0L.V Saidsha/ft l0 mounts a pair of spaced clutches ll and-lla, it being understood that one element of each-clutchis secured to saidshaft while another element of each clutch is rotatable with respect to said shaft. rotatableeleinent of the clutch 11 carries a be'velgear r12, and the similar 'element of the clutch llla carries a bevel gear 13, and said gears are adapted to cooperate with a horizontally mounted gear 14e-carried on 'avertical .shaft 15, The shaft l5 extends through the deck-1 'and carries at its lower is lrotating-in a counterclockwise direction as viewed in Fig.2, the .j ack shaft 6 andpin-ion The jack shaft 6 carries at its end farthest g5 V end apinion'l meshing with a gear 17 secured to the deck 1. v Y .,Presumingthat the spindle 'of the engine 3V 7 (see Figa 6) will likewise be rotated ina counterclockwise ldirection to drivev the j gear 9 and swing shaft 10 in a clockwise direction.

-Thus it'will be seen'that,if the clutch 1l be Voscillate the Vdeck l lcounterclockwiseY as 22 isprovided between themembers 19 and 20. It will be seen from the above that the shaft 21 may be rotated at either of two speeds., the p 14. Suitable means is provided vfor prevent-- Locomotive' mechanism The jack shaft carries a second pinion 8 adjacent the wheel 5, and said pinion meshesY with a gear 28 on a drum shaft 29. The gear 28 meshes with a gear 30 secured to one member 31 ofasuitable clutch mechanism mounted upon a shaft 21. The member31- is rotatable with respect to the shaft 21, while another member 32 of e said clutch is keyed to said shaft 21. The shaft 21 is known asthe crowd and propelling shaft, since it serves to transmit power to the drum 36 Yfor crowding the shovel into the work, `and also, selectively, transmits power to the truck 2, both functions being described below.y

Y Y'The pinion 7 mesheswith a gear 18 keyed to one member 19 of a second clutch mounted on the opposite-end of the shaft 21. The member 19is rotatable with respect to the' shaft 21, while anothermember 2Q offsaid clutch is keyed to said shaft'.v The usual band.

one being'dependent.uponthelratio of the pitch diameters of the pinion 8 and the gear 30. and the, other being dependent'upon the ratio of thepitch diameters of the pinion 7- andthermuch larger gear 18. Adjacentthe mid-pointof sai-d shaft'21 there is pinned' to said shaft a member 25 provided with jaw f clutchteeth atits opposite ends. On oppok site sides of said member 25there are sleeved onsaid shaft 21 bevel gears 23 and 24, each of saidgears being provided with a hub entension formed with teethadapted to cooperate with the teeth of said member 25. vThe operating means for said gears 23 and 24 is so arranged that the gears arejreciproc'ated simultaneously, so that when the `teeth of the hub extension of the gear 23 are engaged with the thedeck 1 and carries at its lower end aV bevel v gear 27a-mesliing with va bevel gear 27o carriedupon a horizontally mounted shaft 270.

A bevel geary 27 d is carried at the opposite end of said shaft 270 and meshes with a bevelgear 27e mounted upon theV4 aXle 277C` ofonepair 0f drivewheels 27g fory Vthe tread 27k. Y It will'thus be seenithat, presuming the engine 3 to be operating as before, if the clutch members 19 and- 20"a`re clutched together, the shaft 21 will be rotated in a clockwise direction as vewed in Fig. 6, and will beso yrotated at 'a very low` speed.V If, now,

the teeth of the hub projection ofthe gear 23 gear 24 with `the corresponding teeth of the member 25, the excavatorwill be driven forward at lowspeed. Lz-If the vmembers 19 and 2O are disengaged andthe members-31 and 32 Y are engaged, the gear 24 being engaged with K the member25, the excavator will be driven backward at its higher speed. And finally,

if'the gears 23 and 24 be returned' to their first mentioned-positions, the clutch members 3,1 and 32.being engaged, the excavator will be driven forward at its-higher speed.- It may befhere notedthat-a bra-ke drum Yis `mounted on the shaft f .Stiel/J crowdz'n amd retreating' mechanism The drum shaft 29 above mentioned is jour, nailed in the frames 6a parallel tothe shaft 6. A drum 36 is vloosely mounted onsaid shaft 29, and' carries a gear -33 which forms one member of a, clutch mechanism, the other member 35 of which is securedto the shaft 29 and carriesan expanding band mechanism'Vv adapted tolock the members 35 and 33 together.,V A.: pinion 34 is bushed on the shaft 21 and maybemoved intoor outfof mesh with the gear 32. 'f y Y It willthus be seen that'the drum v36 may bed-rivenin a clockwise direction asviewed `in Fig. 2 by engaging the member 35 `with the gear 33-,wliereby said drum is driven directlylfrom the shaft'29; or that said drum may befrotatedvinfa' clockwise direction at a lower speedby engaging the clutch members 31 and 32, sliding the pinion 34 into mesh with the' gear 33,and disengaging the members 33and35, whereby said drum 36 isdriven through the pinion 8, gear 28 (as an idler),

gear .30, pinion 34, and gear 33 orthat saidl druinmay be driven in a counterclockwise dl-A rection b vdise'ngaging the members 31 and 32 and the V,members 33 vand 35, engaging theV members 19 and 20, and 'moving the pinion 34. I

into mesh with the `gea-r'33, whereby said drum 3G .will be driven ata much lowervspeed: d

through the pinion 7, gear 18,'pinion 34, and

gear 33. A suitable brakev mechanism 37 car--v ried saiddrum 3,6 is adapted to be operated by a y suitably placed foot lever.

drum3S-and is carried vforwardly beneatha sheave49 'andben-eath a sheave" 50V mounted intermediate the ends 0f the" boom 45, andis vcarried upwardly and securedffto the upper A cable 47 is wound over the top of saidendoffareciprocable'dipperstick 51.'` The j cable. 47 wili hereinafter be termedthe crowd' cable, since it willbevseen that such rotation ofthe drum36 as will', wind in the cable 47 will cause the clipper stick tol be crowded downwardly toinsure' 'ai satisfactory cut. `l`A second cable 48, hereinafter termedthe re- 'tracting'or lifting cable, isv Wound under Vsaid rotation ofthe drum 36 as Will Wind in the cable48` Will'causethe clipper stick 51 to be moved "upwardly to'retract the dipper 52 from the earth. t'willthus ybe seen that clockwise rotation of the drum 36 will crowd identical with the clutch mechanism 33 the dipper int-o* the 'earth andthat counter- 'clockvise rotation vthereof Will .retract th -dippervfrom the earth'.`

A seconddrum 38vis loosely l'mounted lupon the shaft 29 and has secured theretoone member 39 of a clutchfmechanism', the other member 70 of Which is secured to the, shaft 29. The clutch mechanismV 39-70 is practically 35 and Will here be described in some detail. Referring to Fig. 6, it Will be scen that the disc 70 carries an expanding'band mechanism 71. One end of the band is connected to one arm of a bell crank lever` 72 pivotel at '72a' to the disc 70. 'A link 73 is pivoted to the opposite end of said bell crank lever and to an auxiliary brake 77 Which is connected .to an operating lever (not shown). A radius arm 74 is connected to the opposite end of the Vclutch band andv to the disc 70.' An adjusting screw 7 5 is connected to the anchor end of the band and is supported in aboss 76 formed on the disc 70. The auxiliary brake drum 77 having a brake band on its periphery is mounted on the brake housing, one end being fastened to a side frame casting,'and the other cnd being connected to :the mainv operating lever, so that by slight movement of the lever,

' the power of the engine 3 is caused to actuate theexpanding band mechanism 71 tolock the flange 39 to the shaft 2.9. i A brake37a similar to the brake 37 is carried by the .drum` 38 and is actuated by afoot lever (not shown).

sro

A cable 55 is Wound upon the drum 38, and f extends outwardly and over a sheave 56 at the Y outer end of the boom and about a sheave Y. 565 mounted 'in ahousing V56clinked tothe dipper 52. The anchor end of thecable 55V passes around a stationary sheave 56a, and'is secured thereto. 1 Y Y i, Y Boom hoisting mechanism A boom hoisting drum 40 is mounted on a short shaft 41 forwardly of the shaft 2l and carries a gear 42 in mesh'with a pinion 42a hushed on a sleeve 4257Which is keyed to the shaft 21. The pinion 42a and the sleeve 4219 are formed with cooperatingteeth, and said gear may be reciprocated to move vits teeth sleeve.

into and outof mesh with Ythe teeth'on said It will thus be seen thatthe: drum 40? is driven from the shaft 21, vand thatfit is capable ofall ofthe flexibility of direction and speed of rotation capable.

' A'cable 43 is. Wound on said drumv 40'y and `ofyvhich fthe shaft 21;"is

passes Vover a ,'sheave v44 mounted on the frame of the excavator and about sheaves 44u and 44?) on the boom Y'45. to be reeved six strands Inaccordance With usual practise, the boom'45 is pivoted to the deck 1 as at'46, vso that,'vvheni the ldrum 40`isV rotated to draw in the cable'43, the outer end of the boom 45 is elevated. A suitable `brake is, of course, provided forjthe drum 40.

Y` Dmg Zinc bucket operatic-1t .Y In Fig. 3, the machinev is illustrated as adapted for drag line bucket Work. A boom 57 of slightly different construction from the boom 45 is substitutedV for said-latter boom,

said boom 57 being pivoted at 46. The cable 43 is,as before, Wound lon thegdrum 40,y and The cable 43 is adapted Y so 'p reeved through sheaves att-he point'of the boom.l The cablev 55 is passed 'over asheave 56y at the point o f the boom and'connected to aY drag line bucket 58 to support'tlie same.` "A

cable 59 is Vsecured to the upperleading edgeofthe bucket 58 and passes around a sheave 60 suitably secured to the cable 55 above the lconnection-"of Vthe latter With'said bucket 58.

`Will thus be 'seen that, if the members 33 and 35 are clutchedtogethen'the.ca-ble 59 Will be drawn in at a relativelyv high speed; and that,

the members 31 andy 32* are engaged, the pinion4 34 being movedfin'to mesh with the gear 33, the cable 59 Willbe drawn in more slowly. If it is desired toget a stillslower drag for fthebucket58, the cable 59 may be Wound'beneath the 'drum 36, and the members 19 and Y2O`1fnay be4 clutched together whereby -the drum 36 Will' be driven through the pinion gear .18, pinion 314, and gear 33.A l

Y' Ola/m, `.shell bucket Voperation,

Fig.` 4 shows an elevation of theouter end `if the members 33 and 35 are disengaged and lio g of the boom 57 togethervvith a ,clam shell bucket 63and'its connections. In this modication, a cable 64 isiconnected to the hoisting and closing mechanism 63a of. the bucket 63 and passesbver the sheave 56a at thepoint of the' boom v57 on the samefshaft with the sheave56. The cable 64 is led down the boom y n 57 and is Wound on the drum 38. A second cable 55a is connected to the bucket63, passes over the sheave 56 and is Wound on the drum foot leversflfor .the brakes, v37 and S3-7a.

36 to serve asaholding line. y i The drum 36 in this easerislagg'ed to the .same diameter-as the drum 38 in order to permit the two drums to be ioperated- .with .thesame V-line speeds An -automatic spring take-updevice can becar- Vranged on the clutch 35 yonthe-drum` 'to in- -sure the hauling -in offy the-,holdingY line. a

while the hoisting line 64;` is being draw-n in.

'Such .an arrangement will require only one lever for operating thedrum 38,1 and separate J Other; modesv of applying theL principlefof my invention ymay be employedinstead of the'one-explained, change being lmade as regards the mechanism herein disclosed,;pro

vided the means stated by. any of the following; claims or the equivalent *ofsuch stated meansbeem-ployed.

I therefore particularly. point out and distinctly claim. as my invention:

1.1111: a power excavator, the'combination Vof a frame,a` turntable mountedfon the frame, `a boom extending from theturntable having a dipper stick` and '.dipper, f; a Ymain driving shaft, adruni supporting shaft,'anauXiliary shaft; two setsof gearsof'd-iflerent'ratios eng'gaging the-main'shaftfandadapted to be se" lectivelyconnected to fthe auxiliary shaft for driving the latten shaft in opposite directions yat dierent speeds, a gear'` of one of'said setsV beingA securedfto the drum supporting shaft for continuous rotationthereof by the main shaft,i two drumsfloosely,l mounted on the drum supporting shaft, each :having a vclutch lmechanism for; lockingy `the drum to the; said shaft, a gear secured to foneo'f thedrumsand 1a clutch pinion` on therauxiliary shaft,4 adapt- 'ed Yto;be engaged with `the drumgear to'cause therauxiliary shaft to rotate theA said drum selectively inopposite directions. n

.2. In a power shovelmachinery assembly, a jaclr'shaft, Imeans for applying- .power thereto,a`.drum shaft, a swing shaft, a crowd and propelling shaft, I mutually engaginggears on said shafts, frames giving bearing supi ip'ort to the ends of Said shafts, means for driv- A ingfsaid' drum ushaft` by said. gears directly rfrom saidjaclshaft, I neansffor driving said crowdand .propellershaft inzone 'direction .and at one speed directly fromsaid j acksha'ft, and in oppositedirectionandata different speedV from said drurnshaft,vv 'and 'means 'for transporting .the assemblyjby power: applied through said crowdandypropeller, shaft in y either forward or reverse direction at either speed. Y, v ,Y

In ncombi-nationllw-ith'- apparatus of the `class, described Ycomprising tractionV means, a

turntable supported-thereby, material-moving means supported'by said turntable, and a prime-mover mounted on said-turntable, a

machinery assembly comprising a jackshaft,

=- means for transmitting powertheretofrom said.,v primeY mover,` a crowd land :propelling shaftgears on said :last-,named shaft gears on said ackshaft engaging said gears, a drum shaft ,and-V ai, gear Vthereon,-engaging both-.said .jackshaftfgear and-said crowdand propelzling shaft gear,.1neans including. all. said gears .fordrivingv saidz crowd.. andgpropeller shaft f either.. from saidjackshaft or from saiddrurn,vk

propelling shaft, gearson f saidzfl'ast-named l shafts, gears on said jackshaft engaging said gears, meanslfordri'vin'g said crowd'and pro- .peller shaft.- either *from* said ijaf'skshaft ork y from said-drum shaftymeans'for driving said traction-means from saidciowdand propeller shaft, plurality: of-*drums* on said @drum shaft selectively. adapted for'free rotation relatively :thereto or.' fori engagement' therewith,

means for lselectively@driving-one A.of said drums from said crowld andl propeller shaft, fandoperative connections between saidldrums .and said material-moving means.`

. 5. .In combination 1 .with apparatus: of: `the said primemovena-drumshaft, a crowdand l ,w

class xlcscnibed comprising. traction-means, a 'lturntable` supported thereby; vniaterial-movingmeans lsupportedbysaid turntable, and al ,prime mover mounted onl said turntable,\a machinery assembly comprising ack'shaft,V

meansfor; traiismittingpower thereto Vfrom saidgprimemoverfa drumwshaft, a swing.

shaft,: a crowd; andrpropeflling shaftyge'ars fonfeach. of said three last-named `shafts,1 gears on said jackshaft engaging said'gears,means vfordrivlingsaid crowd. and propellershaft i either from said jackshaft orfrom said drum shaft,- mean's forzdriving said traction means from said Icrowd- :and propeller shaft, a pluralityofdruinsfon said drum shaft selective- L lyadapted forfree rotation relatively there- "f .to or; for:l engagement therewith, means'for selectively driving one: lof vsaid vdrums from said :crowd and propeller: shaft, voperative .conl 'ne'ctions between said drums and. said ,matel' f rial-moving .imea'nsa Emeansadjacent said "i crowd and propeller shaft. and actuable therefrom` for changing. the position 4of said niaterial mov-ing ,meansrelatively to said` turntable, directionally selective. vmeans -on-.said

swing shaft for turning saidturntable; 'l

vSigned by me-,this Qth'da'y of Augiist, 1928. .Y A f CHARLES' i-ifLorTii. 

